body {
    display: flex;
    overflow: hidden;
    height: 100vh;
    justify-content: center;
    align-items: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
.background {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    filter: blur(20px);
    background: url("https://www.eveningwater.com/my-web-projects/js/43/img/18.jpg") no-repeat center/cover;
    z-index: -1;
}